Table 7. Concentrations of nutrients in samples collected at the integrator site, San Antonio River near Elmendorf
[ft3/s, cubic feet per second; mg/L, milligrams per liter; <, less than; MDL, method detection limit]
Date | Dis- charge (ft3/s) | Nitrogen, ammonia, dissolved (mg/L) | Nitrogen, nitrite, dissolved (mg/L) | Nitrogen, ammonia plus organic, dissolved (mg/L) | Nitrogen, ammonia plus organic, total (mg/L) | Nitrogen, nitrite plus nitrate, dissolved (mg/L) | Phos- phorus, total (mg/L) |
Phos- phorus, dissolved (mg/L) | Phosphorus, ortho- phosphate, dissolved (mg/L) |
|
|||||||||
04-16-96 | 138 |
0.24 |
0.2 |
0.9 |
1 |
15 |
2.2 |
1.9 |
1.9 |
05-21-96 | 120 |
.09 |
.07 |
.7 |
.8 |
16 |
2.9 |
2.6 |
2.6 |
06-27-96 | 292 |
.11 |
.04 |
.7 |
1 |
8.1 |
.85 |
.71 |
.72 |
08-05-96 | 95 |
.04 |
.03 |
.6 |
.7 |
12 |
2.2 |
2.1 |
2 |
09-03-96 | 241 |
.06 |
.03 |
.6 |
.8 |
12 |
2 |
1.9 |
1.8 |
10-11-96 | 148 |
.05 |
.03 |
.7 |
.7 |
15 |
2 |
2 |
1.1 |
11-04-6 | 209 |
.03 |
.04 |
.6 |
.8 |
14 |
2.3 |
2.1 |
1.1 |
12-05-96 | 302 |
.09 |
.02 |
.6 |
.8 |
12 |
1.9 |
1.9 |
1.1 |
01-23-97 | 147 |
.15 |
.17 |
1 |
1 |
15 |
2.1 |
2.2 |
2.1 |
03-06-97 | 201 |
.17 |
.09 |
.9 |
1.1 |
14 |
1.8 |
1.7 |
1.6 |
03-20-97 | 260 |
.09 |
.07 |
.8 |
1 |
11 |
1.6 |
1.5 |
1.5 |
04-09-97 | 302 |
.08 |
.04 |
.6 |
.9 |
9.5 |
2 |
1.9 |
1.1 |
04-23-97 | 222 |
.229 |
.168 |
.81 |
.97 |
12.8 |
2.15 |
1.99 |
2 |
04-26-97 | 2,750 |
.138 |
.03 |
.37 |
2.8 |
2.44 |
1.36 |
.37 |
.4 |
05-06-97 | 186 |
.125 |
.101 |
.67 |
.85 |
12.2 |
2.17 |
2.03 |
2.01 |
05-22-97 | 315 |
.05 |
.03 |
.52 |
.95 |
7.92 |
.885 |
.72 |
.72 |
06-02-97 | 197 |
.032 |
.078 |
.55 |
.74 |
9.48 |
1.11 |
1.08 |
1 |
06-21-97 | 4,850 |
.054 |
.059 |
.28 |
1.1 |
1.84 |
.536 |
.49 |
.27 |
07-14-97 | 856 |
.044 |
.026 |
<.20 |
.44 |
4.48 |
.522 |
.42 |
.42 |
07-30-97 | 365 |
.083 |
.063 |
.55 |
.62 |
7.63 |
1.23 |
1.13 |
.96 |
08-14-97 | 180 |
.043 |
.036 |
.56 |
.74 |
1.7 |
1.54 |
1.44 |
1.38 |
08-21-97 | 135 |
.023 |
.046 |
.51 |
.62 |
1.6 |
1.5 |
1.35 |
1.33 |
09-11-97 | 299 |
.084 |
.151 |
.59 |
.81 |
10.5 |
1.6 |
1.51 |
1.34 |
09-17-97 | 142 |
.031 |
.049 |
.63 |
.7 |
11.4 |
1.92 |
1.79 |
1.66 |
10-08-97 | 1,110 |
.03 |
.035 |
.48 |
1.3 |
4.9 |
.935 |
.57 |
.54 |
10-22-97 | 324 |
.084 |
.074 |
.47 |
.53 |
9.77 |
1.7 |
1.62 |
1.62 |
Change in MDL for nitrogen, ammonia, dissolved; nitrogen, ammonia plus organic, dissolved; and nitrogen, ammonia plus organic, total for the following analyses; see table 4 |
|||||||||
11-19-97 | 318 |
<.020 |
.021 |
.55 |
.59 |
10.8 |
1.63 |
1.7 |
1.58 |
12-17-97 | 212 |
<.020 |
.062 |
.65 |
.75 |
11.8 |
2 |
1.99 |
1.74 |
12-20-97 | 1,250 |
<.020 |
.035 |
.37 |
3.7 |
3.04 |
1.5 |
.36 |
.35 |
01-06-98 | 1,050 |
.124 |
.043 |
.57 |
.78 |
3.37 |
.497 |
.46 |
.45 |
01-22-98 | 265 |
.021 |
.036 |
.52 |
.62 |
10.8 |
1.54 |
1.47 |
1.4 |
01-31-98 | 1,270 |
.03 |
.013 |
.35 |
1.2 |
2.88 |
.608 |
.34 |
.37 |
02-19-98 | 462 |
.125 |
.045 |
.67 |
.91 |
6.97 |
.888 |
.81 |
.77 |
02-21-98 | 1,080 |
.127 |
.018 |
.35 |
1.7 |
3 |
.776 |
.38 |
.34 |
03-16-98 | 1,360 |
.129 |
.069 |
.4 |
3.1 |
2.31 |
1.26 |
.27 |
.27 |
03-26-98 | 812 |
.041 |
.037 |
.24 |
.55 |
3.91 |
.492 |
.4 |
.38 |
04-28-98 | 218 |
.369 |
.108 |
.98 |
1.1 |
11.3 |
1.81 |
1.73 |
1.76 |
Back to:
Forward to: Table 8